Apparatus for impregnating fabrics and other materials.



' E. W. STROHN. APPARATUS POR IMPREGNATING FABRICS AND OTHER MATERIALS,

APPLICATION FILED MAY 14, 1909;

937,889. Patented Oct. 26, 1909.

6 SHEETS-SHEET 1.

E. W."STROHN. APPARATUS FOR IMPREGNATING FABRICS AND OTHER MATERIALS. APPLICATION IILED MAY 14, 1909.

937,889. Patented Oct. 26, 1909.

6 BHEETSBHEET 2.

Mfness. I v 4 I 7206722 297.

B. W. STROHN. APPARATUS FOR IMPREGNATI'NG FABRICS AND OTHER MATERIALS. APPLIOATION FILED MAY 14, 1909.

937,889. Patentegisggaii N N 3 I .2? N' flu: in VI! R iRi P s w AL 1Q 1% wil EJW. STROHN'. APPARATUS FOR IMPREGNATING FABRICS AND OTHER MATERIALS.

- APPLICATION FILED MAY 14, 1909. I

937,889. Patented Oct. 26, 1909.

6 SHEETS-SHEET 4.

- I E. W. STROHN. APPARATUS FOR IMPREGNATING FABRICS AND OTHER MATERIALS,

- APPLICATION FILED MAY 14, 1909.

937,889, I v I Pafnted Oct. 26, 1909.

BSKEETS-BHEETB.

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EMIL WILHELM STROHN',

PATENT OFFICE.

OF BUFFALO, NEW YORK.

APPARATUS FOR IMPREGNATING FABRICS AND OTHER MATERIALS.

To all whom it may concern:

This invention relates to apparatus for' impregnating or coating lengths or strips of fabric and other material with aliquid preferably in a closed chamber from .which the.

air can be exhausted and in which the treatment can be carried on under atmospheric or higher artificial pressure for forcing the liquid more completely into the pores, meshes or interstices of material.

'The apparatus is especially adapted for impregnating or treating fibrous Webs, belts, bands, cords, &c., with insulating waterproofing and other compounds, but is also desirable for other purposes.

One object of the invention is to provide the impregnating or treating chamber With a portable tank which contains the impregnating or treating liquid and which can be moved into and out of the chamber. prevents the liquid from coming into contact with the inner surface of the chamber, keeps the latterclean, facilitates the cleaning'of the tank, and permits the convenient use of different liquids in the same chamber by pro-.

viding a separate tank for each liquid.

Another ob ect of the lnvention 1s to provide an ethclent and convenlent arrangement of feeding and pressure rolls for forcing the liquid into the impregnated or treated material.

In the accompanying drawings, consisting of five sheets: Figure 1 is a front elevation of an impregnating apparatus embodying this invention. Fig. 2 1s a plan view thereof. Fig. 3 is a longitudinal sectional elevation thereof. Fig. 4 is an elevation of one end thereof. Fig. 5 is a transverse sectional elevation showing the pressure rolls elevated out of the liquid tank. Fig. 6 is a fragmentary elevation of the opposite end of the apparatus. Fig. 'I is a transverse sectional e evation thereof, showlng the pressurerolls in operative position. Like reference characters refer to like parts in the several figures.

comprises a front compartment A. and Ya Specification of Letters Patent.

Application filed May 14,

This

Patented Oct. 26, 1909.

1909. Serial No. 495,948.

smaller rear compartment A projecting rearwardly from the upper portion of the r front compartment, and it is provided with [removablefront and back covers or doors B i and B, respectively, fastened to the casing by.screw bolts 6, or other suitable means, for giving access to said compartments. casing is provided in its top with an opening (I, Fig. vice and a device by which fluid pressure can be applied to thecontents of the chamber.

C represents a tank or vessel for holding the. impregnating liquid or compound. This tank is located in the front compartment A of the impregnating chamber, from which it is removable when the front door or cover is opened, the tank being preferably furnished with casters 0 to enable it to be readil v rolled into and out of the chamber and moved about. A hole 0 is provided in the lower portion of the tank for draining the liquid therefrom.

D represents the drum or reel from which the web, belt or band (Z of material is unwound to be impregnated, and D represents the drum or 'ree] upon which the manated. The deliiery drum D is removably journaled in the liquid tank C and the receiving drum D is removably journaled in the rear compartment A of the impregnating chamber, from which it can be removed When the back door or cover D is opened.

The tank is filled with the impregnating liquid to .a suitable height, as indicated in Fig. 7, the liquid being supplied through an inlet pipe E, Figs. 2 and 7, at one end of the chamber, and the Web, belt or band passes from the delivery drum D through this liquid to and between a pair of prnnary pressure and feed rolls F by which the 1111- pregnating liquid or compound is forced into the pores or interstices of the material, and then between a final pair of pressure rolls F by which the impregnated material is squeezed before it is wound upon the re; ceiving drum D. The final pressure rolls F may be provided with scrapers f for I keeping them free from adhering matter. These pressure rolls F and F are movably mounted in the upper portion of the front i compartment A of the impregnating cham- E ber so that they can be lowered to place I the primary rolls F in the liquid tank, and i raised above the top of the tank to permlt The p for connection with an exhaust de-' the latter to be readily moved into and out of the chamber. In the construction shown in the drawings the shaft f of the lower rollof the final pair is journ'alcd in suitable bearings f in the end walls of the impregnating chamber, see Fig. 3, and frames G vthis screw-shaft the bearing frames G for the pressure rolls can be raised and lowered for supporting the rolls above the hquid tank, as shown 1n Fig. 5, and immersing the primary pressure rolls F in the liquid in the tank, as shown in Fig. 7. 1 The pressure rolls could be raised and lowered for the purpose stated by other suitable means.

The pressure rolls and receiving drum D maybe driven by any suitable means so as to unwind the material from the delivery drum and wind it on the receiving drum. As shown in the drawings, the lower roll of the final pair F is drlven by a sprocket wheel K secured on its shaftf outside of the impregnating chamber, and the other roll of this pair by a pair of gear wheels is connecting the rolls, and the primary pressure rolls F are driven from one of the secondary rolls by a chain belt 79 running around sprocket wheels '76 78 and by connecting gear wheels A shaft L, Fig. 2, is journaled 1n bearings :on one end of the impregnating chamber and a. bracket Z projecting therefrom has one end extending into the rear compartment of the impregnating chamber and de tachably connected by a suitable coupling device Z to the adjacent end of the shaft of the receiving drum D. This shaft L'is driven by a chain belt no running around a sprocket wheel m on the roll shaftj and a sprocket wheel m which is connected to Y the shaft L by a suitable friction drive de- Cir vice m", which permits the motion of the receiving drum to varyrelative to that of the pressure rolls as the roll of material on the drum increases in diameter. The impregnating chamber is provided with suitable transparent observatlon panes N.

In the operation of the apparatus the'delivery drum D containing the web, belt or band of material to be impregnated is placed in the liquid tank C and the latter rolled into the impregnating chamber, while the pressure rolls F and F' are in their elevated' osition. The front end of the material is passed between the sets of pressure rollsand attached to the receiving drumlD the screw shaft I is operated to-lower the pressure rolls F into the liquid tank, and the impregnating chamber is closed. The apparatus is then exhausted and the impregnating liquid admitted to the tank G through the pipe E.

The material is wound onto the receivin drum D from the delivery drum D an travels slowly through the impregnating liquid in the tank C, whereby the material becomes charged with the liquid or compound. The latter is forced into the pores,

meshes or interstices of the material by the primary feeding and pressure rolls F, the

final pressure rolls F also serving to remove any excess impregnating composition adhering to the material. t-erial has been,- impregnated and wound upon the receiving drum, the latter, containing the material, is removed from the chamber through the back door B.-' fabric or material to be impregnated may be arranged in folds instead of being wound upon drums. As the delivery and receiving drums and the intermediate feed and pres sure rolls are all located within the closed When the ma- The impregnating chamber, the latter can be ex- 0 hausted before admitting the impregnating liquid to the chamber, and the chamber can also be placed under fluid pressure, if desired, for increasing the impregnating act1on by admitting steam or air under pressure to the chamber through the opening a,

or in any. other suitable way. 7

The movable mounting-of the feed and pressure rolls in the impregnating chamber as described, not only facilitates the movement of the tank into and out of the impreg.

nating chamber, but as the delivery drum is the only part ofthe apparatus mounted in the liquid tank, the latter can be readily cleaned by first removing. the drum. Furthermore, when the feed and pressure rolls are raised as shown in Fig. 5, they leave the impregnating chamber unobstructed so that it can be entered for cleaning the same and the feed and pressure rolls.

I claim as my invention:

' 1. In an impregnating apparatus, the combination of an impregnating chamber in which the impregnating liquid is contained, a delivery drum arranged in the chamber and containing the material to be impregnated, a receiving drum also arranged in said chamber and adapted to receive the impregnated material, primary and final pressure rolls arranged in the chamber-and acting upon the material as it passes from the delivery drum to the receiving drum, said primary rolls being arranged to dip into the liquid and apply the same to the material,

2. The combination of a treating chamber, a tank for the treating liquid which is re-' movable from the chamber, and pressure rolls for acting upon the material, said rolls being movably mounted in the chamber and said pressure rolls into and raising them out of said tank, substantially as set forth.

4. The combination of a treating chamber, a tank forthe treating liquid which is removable from the chamber, a delivery drum arranged in said tank and containing the material to be treated, a receiving drum arranged in the chamber and adapted to receive the treated material, pressure rolls movably mounted in the chamber between said delivery and receiving drums for acty 111g upon the material, and means for ra1s-; ing and lowering said pressure rolls, substantially as set forth.

5. In an impregnating apparatus, the combination of an impregnatlng chamber having front and rear doors, -a tank for the impregnating liqui'd which is removable from the chamber through said front door, a

delivery drum arranged in said liquid tank and containing the material to be impregnated, a receiving drum for the material arranged in the chamber and being removable therefrom through said rear door, pressure rolls movably mounted in the chamber between said delivery and receiving drums for acting upon the material, and means for raising and lowering said pressure. rolls, substantially as set forth.

6. In an impregnating apparatus, the 'combinationof an impregnating chamber, a tank for the impregnating liquid which is removable from the chamber, pressure rolls arranged in the chamber for acting upon the material, the shaft of one of said rolls having bearings in the chamber, swinging frames hung on said roll shaft and carrylng the other pressure rolls, and means for raising and lowering said pressure rolls in the chamber, substantially as set forth.

7 In an impregnating apparatus, the

combination of an impregnating chamber, a

tank for the impregnating liquid which isv removable from the chamber, pressure rolls arran ed in the chamber for acting upon the material, the shaft of one of said rolls having bearings in the chamber, swing ng frames hung on said roll shaft and carrymg the other pressure rolls, drive meansfor said roll shaft, drive connections between said shaft and the other rolls, and means for raising and lowering said pressure rolls in the chamber, substantially asrget forth.

8. In an impregnating apparatus, the combination of an impregnating chamber, a tank for the'impregnating liquid which is removable from the chamber, a delivery drum arranged in said liquid tank and con tainin the material to be impregnated, a receiving drum arranged in the chamber and adapted to receive the impregnated material, pressure rolls arranged in the chamber for acting upon the material, the shaft of one of said rolls having bearings in the chamber, swinging frames hung on said roll shaft and carrying the other pressure rolls, drive means for said roll shaft, drive connections between said shaft and the other rolls and between said roll shaft and said receiving drum, and means for raising and lowering said pressure rolls in the chamber, substantially asset forth.

Witness my hand, this 8th day of May, 

